546557381 has 2 divisors, whose sum is σ = 546557382. Its totient is φ = 546557380.

The previous prime is 546557371. The next prime is 546557399. The reversal of 546557381 is 183755645.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 533841025 + 12716356 = 23105^2 + 3566^2 .

It is a cyclic number.

It is not a de Polignac number, because 546557381 - 2¹⁰ = 546556357 is a prime.

It is a super-2 number, since 2×546557381² = 597449941451158322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (546557371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 273278690 + 273278691.

It is an arithmetic number, because the mean of its divisors is an integer number (273278691).

Almost surely, 2^546557381 is an apocalyptic number.

It is an amenable number.

546557381 is a deficient number, since it is larger than the sum of its proper divisors (1).

546557381 is an equidigital number, since it uses as much as digits as its factorization.

546557381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 504000, while the sum is 44.

The square root of 546557381 is about 23378.5667011474. The cubic root of 546557381 is about 817.6082302690.

The spelling of 546557381 in words is "five hundred forty-six million, five hundred fifty-seven thousand, three hundred eighty-one".